Results 21 to 30 of about 4,247,994 (151)

Discovery of nano organo-clay complex pore-fractures in shale and its scientific significance: A case study of Cretaceous Qingshankou Formation shale, Songliao Basin, NE China

open access: yesPetroleum Exploration and Development
A new pore type, nano-scale organo-clay complex pore-fracture was first discovered based on argon ion polishing-field emission scanning electron microscopy, energy dispersive spectroscopy and three-dimensional reconstruction by focused ion-scanning ...
Longde SUN   +7 more
doaj   +3 more sources

Logging Characteristics and Identification Methods of Low Resistivity Oil Layer: Upper Cretaceous of the Third Member of Qingshankou Formation, Daqingzijing Area, Songliao Basin, China [PDF]

open access: yesGeofluids, 2017
This study focuses on low resistivity thick layer sandstone in the X~XII groups of the third member of Qingshankou Formation at Daqingzijing oilfield, along with comprehensive data of logging, core, oil test, and production test.
Congjun Feng   +3 more
doaj   +3 more sources

Modeling of Tectonic-Thermal Evolution of Cretaceous Qingshankou Shale in the Changling Sag, Southern Songliao Basin, NE China

open access: yesFrontiers in Earth Science, 2021
A series of significant shale oil discoveries have been made recently in the Upper Cretaceous Qingshankou Formation in the Songliao Basin, providing a new resource target for shale oil exploration in Northeast China.
Yuchen Liu   +11 more
doaj   +1 more source

Reservoir Overpressure in the Mahu Sag, Northwestern Junggar Basin, China: Characteristics and Controlling Factors

open access: yesGeofluids, Volume 2023, Issue 1, 2023., 2023
Reservoirs with overpressure are of great importance for petroleum exploration where commercial production can be usually obtained. Studying the distribution characteristics and controlling factors of reservoir overpressure is crucial for further petroleum exploration.
Haisheng Wu   +8 more
wiley   +1 more source

Controlling Factors of Organic‐Rich Lacustrine Shale in the Jurassic Dongyuemiao Member of Sichuan Basin, SW China

open access: yesGeofluids, Volume 2023, Issue 1, 2023., 2023
Organic‐rich continental shale, widespread in the Sichuan Basin during the deposition of the Jurassic Dongyuemiao Member (J1d), is considered the next shale hydrocarbon exploration target in southern China. To identify a shale gas sweetspot and reduce exploration risk, it is of great significance to determine the organic matter (OM) enrichment ...
Yadong Zhou   +9 more
wiley   +1 more source

The Exquisite Comparison of Shale Mineralogical‐Geochemical Characteristics between Chang 7 Member and Chang 9 Member in Yanchang Formation, Ordos Basin

open access: yesGeofluids, Volume 2023, Issue 1, 2023., 2023
Significant amounts of unconventional oil and gas resources have been discovered in the Yanchang Formation of Ordos Basin. Shale layers deposited in Chang 7 member (divided into Chang 7‐2 submember (C7‐2SM) and Chang 7‐3 submember (C7‐3SM) and Chang 9 member (C9M)) are the main source rocks.
Wang Zhang   +4 more
wiley   +1 more source

Study on Anisotropic Petrophysical Modeling of Shale: A Case Study of Shale Oil in Qingshankou Formation in Sanzhao Sag, Songliao Basin, China

open access: yesGeofluids, Volume 2023, Issue 1, 2023., 2023
Seismic petrophysics is an important link between seismic elastic properties and reservoir physical properties. Based on the petrological and microstructure characteristics of shale in the Qingshankou formation of Sanzhao sag in the north of Songliao Basin, this paper presents an anisotropy petrophysical model with complex pore structure suitable for ...
Ang Li   +9 more
wiley   +1 more source

Geochemical Characteristics of Trace Elements and REEs and their Geological Significance for Uranium Mineralization within the Qianjiadian Sandstone‐Hosted Uranium Deposit, Songliao Basin

open access: yesGeofluids, Volume 2023, Issue 1, 2023., 2023
The Qianjiadian uranium deposit is a typical interstratified oxidized zone sandstone‐hosted uranium deposit hosted in the Upper Cretaceous Yaojia Formation of the southern Songliao Basin. Despite its significance, little research has been conducted on the relationship between trace elements, REEs, and uranium mineralization in this deposit.
Zhaobin Yan   +7 more
wiley   +1 more source

Evolution of Fractal Pore Structure in Sedimentary Rocks

open access: yesEarth and Space Science, Volume 9, Issue 6, June 2022., 2022
Abstract Geological processes alter pore spaces over time, and their analysis can shed light on the dynamic fractal structure and fluid flow of rocks over time. This study presents experimental evidence to illustrate that the pore fractal structure evolves with sedimentation, carbonate cementation, clay growth, and dissolution.
Nengwu Zhou   +5 more
wiley   +1 more source

Extremely High Primary Productivity and Organic Matter Enrichment in Lacustrine Sediments: Late Triassic Chang 73 Sub‐Member, Western Ordos Basin

open access: yesGeofluids, Volume 2022, Issue 1, 2022., 2022
The 7th member of the Late Triassic Yanchang Formation is the most important Mesozoic source rocks and shale oil reservoir in the Ordos Basin. The hydrocarbon potential and organic matter enrichment mechanism of this organic‐rich member are questioned because of the high heterogeneity of continental sediments. In particular, the lack of drilling in the
Zhiwei Liao   +7 more
wiley   +1 more source

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